Bicycle-lock



(No Model.)

E. J'. BAKER.L

BICYCLE LOCK.

mamiwwwwalg-f Patented Sept. 7,1897;

EDWARD J. BAKER, OF HACKENSACK, NElV JERSEY.

BICYCLE-LOCK.

SPECIFICATION forming part of Letters Patent No. 589,491, dated September 7, 1897.

Application filed Tulle 18,189,6. Serial No. 596,017. (No model.)

To all whom t may concern:

Be it known that. I, EDWARD J. BAKER, a citizen of the United States, and a resident of Hackensackergen county, New J ersey,have made certain new and useful Improvements in Cycle-Locks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

The object of my invention is to provide a conveniently-operated cyclevlock, simple in construction, but light and strong, which can be reeadily attached to and carried by the cycle, which when not in use will not interfere with the operation or detract from the appearance of the Wheel, and by which the wheel may be readily locked irrespective of the angular position of the cranks.

To this end it consists in the combination and arrangement of parts and details hereinafter described, and specifically pointed out in the claims.

In the accompanying drawings,- Figure l represents a portion of a bicycle, showing the lock secured thereto. Fig. 2 is a perspective View of the lock. Fig. 3 is a side elevation thereof, part-lyin section, on the line 3 3, Fig. 4 and Fig. 4 is a plan view, partly in section, on the line 4 4, Fig. 3, showing the construction of the base which supports the lock.

Similar figures of reference are used to indicate like parts in all the views.

The lock, as shown, comprises a padlock l, provided with a sliding shackle 2 of suitable shape and size to enter the space between the side plates of one of the links of the sprocketchain 3. The lock lis supplied with the usual mechanism for securing the shackle in position, preferably a spring-catch, arranged to be released by a key. The lock l is hinged or pivoted, as at 4, to the base 5, so that when not in use it can be folded down flat against the same, as shown in dotted lines in Figs. l and 3. The base 5 is provided with a clamp 6, arrangedA to encircle the lower horizontal tube 7 of the bicyclefraxnc and to be clamped firmly thereto by the set-screw S. At one end of the base 5 is secured the flat spring 9, the free end of which bears against thelower portion of the lock l, so as to hold the same firmly in its lowered position. (Shown in dotted lines in Fig. It serves also to retain it in its elevated position, as shown in full lines, and prevents rattling. The sides of the base 5 are pivotally secured to each other, so that ,the opposite sides of the clamp 6 may be swung apart, as shown in dotted lines in Fig. 4, to permit its being readily placed upon the bicycle-frame. The pivot 4 is preferably screw-threaded, as vshown in Fig. 4, and after the base is clamped to the machine the lock is secured thereto by screw` ing in the pivot, and, if desired, the inner end of the pivot may then be upset by a stroke of a hammer, so that'the lock cannot be removed without filing away the upset portion of the e pivot.

The operation of my improved device will nowbe apparent. The clamp 6 is opened as above described, and the base 5 is firmly secured to the lower tube 7 ofthe bicycle, as stated, being securely fastened thereto by the set-screw S. The lock is vthen secured to the base by screwing in the pivot 4, and, if desired, the pivot is upset to prevent its removal. When it is desired to lock the bicycle, the shackle 2 is released and is inserted in one of the links of` the sprocket-chain. The

shackle is then pressed into place, closing with a spring-snap. rlhe bicycle is then firmly locked, it being impossible to rotate the cranks, as the chain is firmly held in place.

lVhen it is desired to unlock the wheel, the shackle 2 is released by a key and removed from the link. The shackle is then closed again and the lock folded down upon the base 5, as shown by dotted lines in Fig. 3.

My improved lock may be secured to the cycle so as to become practically a part of the structure, and when not in use maybe folded down' upon the side bar and so as to be entirely out of the way of the rider and hardly noticeable.

Once attached to the wheel, the lock will always be in place when Wanted and cannot be left behind or lost. The carrying of the lock in the pocket when the wheel is in use is also obviated.

Various modifications in detail may be made in my improved lock without departing from the spirit of my invention.

' Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

SoV

IOO

l. A fastening;` device for cycles comprising' a base, provided with a clamp arranged to be rigidly secured to one of the lowerl tubes of the frame of the machine, a look pivoted to said base, a spring' or detent engaging with said lock to hold the lock in operative and inoperative position and a shackle forming` part of the look and arranged to enter between the side plates of a link of the sprocket 1o chain, substantially as shown and described.

2. Afastening device for cycles eomprisin` a base formed of two pivotally-eonnected 

